There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?

Can you divide numbers from 1 to 9 (1 2 3 4 5 6 7 8 9) into two groups so that the sum of the numbers of each group is equal?

Note: 9 cannot be turned over to make it 6.

As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

Imagine you are in a room with no windows or doors. How will you get out?

What is the next number in this matchsticks series riddle?

Analyze and find the missing item in the sequence:
16, 06, 68, 88, __, 98

A man dies of old age on his 25 birthday. How is this possible?

What can run but never walk, have a mouth that never speaks, have a head that never weeps, and have a bed but never sleeps?

In a town, there are four houses located at different distances from each other. Following are the distances:

The third house is 60 meters apart from the first house.
The fourth house is 40 meters apart from the second house.
The third house is 10 meters nearer to the fourth house than it is to the second house.

Can you find out the distance between the fourth and the first house?